<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			div {
				width: 200px;
				height: 100px;
				border: 1px solid orange;
				margin: 20px;
				padding: 10px;
				box-sizing: border-box;
			}

			#d3 {
				float: left;
			}

			#d2 {
				float: right;
			}

			#d1 {
				float: right;
			}
		</style>
	</head>
	<body>
		<div id="d1">博为峰</div>
		<div id="d2">学掌门</div>
		<div id="d3">29期</div>
	</body>
</html>
